The interior of Mars is as chunky as a delicious macadamia cookie. A new analysis of the acoustic waves that ripple through and bounce around the red planet's guts reveals that the ancient, early ...

NASA scientists have uncovered massive fragments of ancient planetary collisions buried deep within Mars’ mantle, shedding light on the planet’s tumultuous early history. Preserved for over four ...

Add Yahoo as a preferred source to see more of our stories on Google. The findings, published in the journal Science, may change what we know about the formation of rocky planets like Mars, Venus and ...

Mars’ north polar vortex locks its atmosphere in extreme cold and darkness, freezing out water vapor and triggering a dramatic rise in ozone. Scientists found that the lack of sunlight and moisture ...

Astronauts train to scale a Mars volcano at an analogue site in France. Lava tubes that crisscross the Martian surface might provide sanctuaries for the first human explorers on the Red Planet. (Photo ...

Metal-rich asteroids could one day become hardware stores for Mars, supplying the materials needed to build and repair a ...

Scientists have found a new type of rock inside a Martian meteorite that contains andradite garnet, a mineral often ...